ARDUINO & DAC for XY projector

[Multimode]

Hi MP,


I bought this one
:yh:

Hi Camvo,
That laser looks good, whats the beam / spot look like (good alignment?).

I done some testing with the G120 and the ILDA test file.
I load the file into the program, this is loaded into flash memory using progmem (saves using the limited RAM).

The G120 scanners do a faily good job at 12KPS, things start to look untidy at 18K.
Be interesting to try some modern scanners and amps.
What galvos are you using?

Here are some photos of the test file at the two speeds and a logo.
The logo she has 1677 points and there is a lot of flicker because the update is only 10hz !.....I need a Due :yabbem:

ATB
MM

 

[camvo]

The laser beam is realy good. It is aligned pretty well and the white looks similar to a white LED.

I buy my scanners here

He lives only 40km from my house.

The best thing is that the amplifier boards are 2 separate ones.
(Good for the harp business.)

How did you make the ILDA patern?

 

[Multimode]

The laser beam is realy good. It is aligned pretty well and the white looks similar to a white LED.
I buy my scanners here
How did you make the ILDA patern?

Hi Camvo,
Thanks for the info.

I got the ILDA from LaserFX site (I think)
There are loads of files on Photolexicon too.

Attached are the ILDA files and also a file that I load into the arduino that has a simple Blank / xy / co-ord format.
(Change the extension of the ILDAtest_Copy to .ild)

Here is a link to a simple but useful logo / frame generator - good for previewing 2d ILDA filas and making your own logos in ILDA of CSV format.
http://elm-chan.org/works/vlp/report_e.html
See bottom of the page for the download.

ATB
MM

 

[camvo]

Thanks Multimode!

Thanks a lot.

 

[camvo]

Hi all,

I have been messing around with my new toy. :yh:

See the movies at the bottom.

I have created a moving sine wave.
I have put 50 points in the wave.
The wave starts to flicker from 60-65 points in the wave.
(Maybe a lookup table will improve that.)
The horizontal line is because this 50mW laser does not have blanking.

Still, I think it looks realy cool with some smoke in it. CLUB STYLE !!!

I think the Arduino DUE is too slow for complicated graphics but I will create a very nice beam show.

I used this code:

float rad      = 0;
float pi       = 3.14;
int points     = 50;           // number of point in the wave
int pointmax   = points;       // to return to the begin of the wave
int amplitude  = 500;          // height of the wave
int cycles     = 1;            // number of cycles in the wave
int speed      = 3;            // wave speed     
int spread     = 4000/points;  // make the wave always the same width
int step       = 360/points;   // to devide the points in the wave
int walk       = 0;            // make the wave move

int midx       = 2040;         // master center for x
int midy       = 2040;         // master center for y

int valx       = 2040;         // set x to center
int valy       = 2040;         // set y to center

void setup()
{
  pinMode(DAC0, OUTPUT); 
  pinMode(DAC1, OUTPUT); 
  analogWriteResolution(12);  
}

void loop() 
{
 for (int points = 0; points < pointmax + 1; points++)
   {
    float rad = 2*pi * ((step*points*cycles+walk)/360.0);
    valx = points * spread;    
    valy = sin(rad)*amplitude + midy;

    analogWrite(DAC0, valx);
    analogWrite(DAC1, valy);
    if (points ==0)
      {
        delay(2);
      }
    delayMicroseconds(400); 
   }
walk=walk+speed;
}

 

[Multimode]

I think the Arduino DUE is too slow for complicated graphics but I will create a very nice beam show.

Hi camvo,

All the floating point and sine calcs are a huge overhead, I'm sure the Due can output complicated graphics, but only from pre stored frames.

Attached is the ino file I used for the girl logo.

It has over 1600 points and the little 328 can scan it, albeit at 10hz so there is flicker.
Your Due should handle this no problem:eg:

The PROGMEM command puts the data in the ROM as there is only 4k of ram.
This might work with the due (?) but you could just use the data as an array in the Due Ram as there is plenty of space.

This line reads the data from program memory ...
logoOrdx = pgm_read_word(logodata + k);

The data format is blank,X,Y

Obviously, you'll need to take out the part where the SPI transfer happens and put in the Due analogue write, etc.


ATB
MM

 

[camvo]

Hi Multimode,


OK you are right. It can. :yh:

The DUE has difficulty with this image. It flickers. (See movie)
(Keep in mind that the laser has no blanking but I applied the blanking in the code to simulate the speed.)

I reduced the 50 micro seconds to 25.
The picture gets more stable but starts to deform.

int blanking = 7; //laser blanking pin
int valx     = 0;
int valy     = 0;
int k        = 0;

int logdata [6031] =
{
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1,	3304,	2920,
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1,	3372,	2804,
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1,	3328,	2712,
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1,	3408,	2540,
1,	3424,	2512,
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1,	3340,	2460,
1,	3340,	2460,
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0,	3276,	2548,
0,	3276,	2548,
0,	3276,	2548,
0,	3276,	2548,
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1,	3216,	2560,
1,	3192,	2552,
1,	3180,	2540,
1,	3176,	2520,
1,	3180,	2496,
1,	3184,	2476,
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1,	3244,	2432,
1,	3244,	2432,
1,	3244,	2432,
1,	3244,	2432,
1,	3244,	2432,
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1,	3240,	2472,
1,	3240,	2492,
1,	3240,	2512,
1,	3248,	2524,
1,	3256,	2536,
1,	3272,	2544,
1,	3284,	2528,
1,	3300,	2508,
1,	3312,	2480,
1,	3340,	2440,
1,	3372,	2396,
1,	3408,	2328,
1,	3440,	2268,
1,	3464,	2220,
1,	3472,	2200,
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1,	3472,	2200,
1,	3472,	2200,
1,	3448,	2168,
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1,	3396,	2136,
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1,	3368,	2180,
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1,	3304,	2328,
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1,	3264,	2428,
1,	3264,	2428,
1,	3264,	2428,
1,	3264,	2428,
1,	3280,	2356,
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1,	3300,	2216,
1,	3312,	2140,
1,	3320,	2064,
1,	3324,	1984,
1,	3328,	1932,
1,	3336,	1872,
1,	3336,	1856,
1,	3336,	1856,
1,	3336,	1856,
1,	3376,	1884,
1,	3424,	1908,
1,	3424,	1908,
1,	3424,	1908,
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1,	3424,	1952,
1,	3420,	2004,
1,	3412,	2056,
1,	3404,	2096,
1,	3396,	2136,
1,	3396,	2136,
1,	3396,	2136,
1,	3396,	2136,
0,	3316,	2244,
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0,	3172,	2480,
0,	3172,	2480,
0,	3172,	2480,
0,	3172,	2480,
1,	3164,	2464,
1,	3156,	2412,
1,	3140,	2356,
1,	3120,	2264,
1,	3100,	2172,
1,	3084,	2092,
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1,	3060,	1980,
1,	3060,	1980,
1,	3060,	1980,
1,	3060,	1980,
1,	3104,	1952,
1,	3160,	1932,
1,	3160,	1932,
1,	3160,	1932,
1,	3160,	1932,
1,	3168,	1968,
1,	3176,	2052,
1,	3188,	2132,
1,	3200,	2216,
1,	3212,	2304,
1,	3220,	2372,
1,	3224,	2424,
1,	3224,	2424,
1,	3224,	2424,
1,	3224,	2424,
1,	3224,	2424,
1,	3232,	2356,
1,	3236,	2300,
1,	3244,	2188,
1,	3256,	2076,
1,	3264,	1956,
1,	3284,	1816,
1,	3292,	1720,
1,	3292,	1644,
1,	3296,	1576,
1,	3296,	1528,
1,	3296,	1528,
1,	3296,	1528,
1,	3296,	1528,
1,	3296,	1528,
1,	3244,	1552,
1,	3188,	1584,
1,	3188,	1584,
1,	3188,	1584,
1,	3188,	1584,
1,	3180,	1648,
1,	3180,	1716,
1,	3180,	1804,
1,	3180,	1892,
1,	3180,	1980,
1,	3176,	2052,
1,	3176,	2052,
1,	3176,	2052,
1,	3176,	2052,
1,	3176,	2052,
0,	3056,	1924,
0,	2964,	1820,
0,	2964,	1820,
0,	2964,	1820,
0,	2964,	1820,
0,	2964,	1820,
1,	2992,	1824,
1,	3024,	1840,
1,	3056,	1864,
1,	3084,	1896,
1,	3100,	1924,
1,	3104,	1944,
1,	3104,	1944,
1,	3104,	1944,
1,	3104,	1944,
0,	3096,	2172,
0,	3096,	2172,
0,	3096,	2172,
0,	3096,	2172,
0,	3096,	2172,
1,	3080,	2200,
1,	3052,	2232,
1,	3020,	2260,
1,	3020,	2260,
1,	3020,	2260,
1,	3020,	2260,
1,	3020,	2260,
0,	3008,	2532,
0,	2996,	2784,
0,	2976,	3020,
0,	2960,	3216,
0,	2964,	3452,
0,	2964,	3452,
0,	2964,	3452,
0,	2964,	3452,
0,	2964,	3452,
0,	2964,	3452,
1,	2996,	3436,
1,	3052,	3388,
1,	3124,	3324,
1,	3176,	3256,
1,	3244,	3152,
1,	3308,	3016,
1,	3372,	2860,
1,	3420,	2680,
1,	3464,	2512,
1,	3512,	2340,
1,	3548,	2180,
1,	3580,	2056,
1,	3596,	1980,
1,	3616,	1884,
1,	3616,	1884,
1,	3616,	1884,
1,	3616,	1884,
1,	3616,	1884,
1,	3576,	1928,
1,	3536,	1968,
1,	3512,	1988,
1,	3512,	1988,
1,	3512,	1988,
1,	3512,	1988,
1,	3512,	1988,
1,	3504,	1948,
1,	3488,	1880,
1,	3456,	1760,
1,	3420,	1660,
1,	3392,	1568,
1,	3364,	1484,
1,	3364,	1484,
1,	3364,	1484,
1,	3364,	1484,
1,	3364,	1484,
1,	3336,	1532,
1,	3304,	1572,
1,	3304,	1572,
1,	3304,	1572,
1,	3304,	1572,
0,	3200,	1568,
0,	3200,	1568,
0,	3200,	1568,
0,	3200,	1568,
1,	3192,	1552,
1,	3180,	1512,
1,	3180,	1512,
1,	3180,	1512,
1,	3180,	1512,
1,	3180,	1512,
1,	3156,	1544,
1,	3132,	1572,
1,	3132,	1572,
1,	3132,	1572,
1,	3132,	1572,
1,	3104,	1524,
1,	3064,	1464,
1,	3024,	1384,
1,	3000,	1344,
1,	2984,	1312,
1,	2984,	1312,
1,	2984,	1312,
1,	2984,	1312,
1,	2948,	1340,
1,	2900,	1388,
1,	2900,	1388,
1,	2900,	1388,
1,	2900,	1388,
1,	2868,	1340,
1,	2824,	1264,
1,	2780,	1188,
1,	2748,	1128,
1,	2732,	1080,
1,	2732,	1080,
1,	2732,	1080,
1,	2732,	1080,
0,	2792,	1296,
0,	2860,	1500,
0,	2920,	1720,
0,	2984,	1940,
0,	2984,	1940,
0,	2984,	1940,
0,	2984,	1940,
0,	2984,	1940,
1,	2976,	1896,
1,	2968,	1828,
1,	2944,	1728,
1,	2916,	1632,
1,	2884,	1536,
1,	2844,	1444,
1,	2796,	1364,
1,	2760,	1304,
1,	2716,	1236,
1,	2700,	1212,
1,	2700,	1212,
1,	2700,	1212,
1,	2700,	1212,
1,	2700,	1212,
1,	2712,	1272,
1,	2736,	1380,
1,	2756,	1480,
1,	2776,	1588,
1,	2788,	1732,
1,	2800,	1844,
1,	2808,	1944,
1,	2812,	2028,
1,	2820,	2084,
1,	2824,	2120,
1,	2824,	2120,
1,	2824,	2120,
1,	2824,	2120,
1,	2824,	2120,
0,	2864,	2212,
0,	2904,	2328,
0,	2904,	2328,
0,	2904,	2328,
0,	2904,	2328,
0,	2904,	2328,
1,	2860,	2344,
1,	2780,	2360,
1,	2696,	2376,
1,	2628,	2388,
1,	2564,	2400,
1,	2488,	2404,
1,	2428,	2412,
1,	2388,	2416,
1,	2336,	2416,
1,	2292,	2420,
1,	2248,	2412,
1,	2216,	2412,
1,	2172,	2408,
1,	2144,	2404,
1,	2144,	2404,
1,	2144,	2404,
1,	2144,	2404,
1,	2144,	2404,
0,	2252,	2268,
0,	2320,	2168,
0,	2352,	2112,
0,	2352,	2112,
0,	2352,	2112,
0,	2352,	2112,
0,	2352,	2112,
1,	2364,	2136,
1,	2384,	2156,
1,	2408,	2176,
1,	2428,	2188,
1,	2460,	2196,
1,	2496,	2200,
1,	2528,	2204,
1,	2576,	2208,
1,	2620,	2212,
1,	2656,	2204,
1,	2704,	2196,
1,	2740,	2188,
1,	2772,	2172,
1,	2796,	2164,
1,	2816,	2156,
1,	2832,	2148,
1,	2832,	2148,
1,	2832,	2148,
1,	2832,	2148,
1,	2804,	2136,
1,	2784,	2116,
1,	2772,	2096,
1,	2772,	2096,
1,	2772,	2096,
1,	2772,	2096,
1,	2772,	2096,
1,	2756,	2108,
1,	2728,	2128,
1,	2704,	2140,
1,	2672,	2152,
1,	2640,	2156,
1,	2600,	2164,
1,	2568,	2164,
1,	2536,	2164,
1,	2504,	2164,
1,	2476,	2164,
1,	2456,	2152,
1,	2436,	2140,
1,	2420,	2124,
1,	2420,	2124,
1,	2420,	2124,
1,	2420,	2124,
1,	2396,	2124,
1,	2364,	2128,
1,	2364,	2128,
1,	2364,	2128,
1,	2364,	2128,
0,	2432,	2112,
0,	2432,	2112,
0,	2432,	2112,
0,	2432,	2112,
1,	2444,	2120,
1,	2460,	2124,
1,	2476,	2128,
1,	2488,	2124,
1,	2504,	2116,
1,	2508,	2104,
1,	2504,	2092,
1,	2492,	2084,
1,	2476,	2084,
1,	2460,	2084,
1,	2444,	2092,
1,	2444,	2092,
1,	2444,	2092,
1,	2444,	2092,
1,	2444,	2076,
1,	2444,	2056,
1,	2440,	2040,
1,	2440,	2020,
1,	2440,	2008,
1,	2440,	2008,
1,	2440,	2008,
1,	2440,	2008,
0,	2420,	2008,
0,	2420,	2008,
0,	2420,	2008,
1,	2436,	2012,
1,	2464,	2008,
1,	2492,	2008,
1,	2532,	2008,
1,	2556,	2004,
1,	2592,	2000,
1,	2628,	1996,
1,	2656,	1996,
1,	2680,	1992,
1,	2712,	1988,
1,	2712,	1988,
1,	2712,	1988,
1,	2712,	1988,
1,	2712,	1988,
0,	2680,	1996,
0,	2680,	1996,
0,	2680,	1996,
1,	2696,	2008,
1,	2704,	2020,
1,	2704,	2020,
1,	2704,	2020,
1,	2704,	2020,
1,	2704,	2020,
1,	2684,	2028,
1,	2668,	2028,
1,	2660,	2044,
1,	2664,	2056,
1,	2664,	2056,
1,	2688,	2064,
1,	2700,	2056,
1,	2712,	2052,
1,	2712,	2052,
1,	2712,	2052,
1,	2712,	2052,
1,	2712,	2052,
1,	2712,	2052,
1,	2724,	2068,
1,	2728,	2080,
1,	2732,	2092,
1,	2740,	2104,
1,	2740,	2104,
1,	2740,	2104,
1,	2740,	2104,
1,	2740,	2104,
0,	2416,	2192,
0,	2156,	2252,
0,	1924,	2292,
0,	1792,	2328,
0,	1792,	2328,
0,	1792,	2328,
0,	1792,	2328,
0,	1792,	2328,
1,	1748,	2332,
1,	1712,	2332,
1,	1692,	2332,
1,	1660,	2328,
1,	1620,	2320,
1,	1580,	2316,
1,	1544,	2304,
1,	1520,	2300,
1,	1520,	2300,
1,	1520,	2300,
1,	1520,	2300,
0,	1560,	2212,
0,	1612,	2112,
0,	1612,	2112,
0,	1612,	2112,
0,	1612,	2112,
0,	1612,	2112,
0,	1612,	2112,
1,	1628,	2124,
1,	1652,	2132,
1,	1680,	2140,
1,	1716,	2144,
1,	1744,	2148,
1,	1776,	2144,
1,	1816,	2140,
1,	1852,	2132,
1,	1872,	2116,
1,	1900,	2100,
1,	1912,	2084,
1,	1912,	2084,
1,	1912,	2084,
1,	1912,	2084,
1,	1912,	2084,
1,	1896,	2080,
1,	1876,	2088,
1,	1848,	2096,
1,	1824,	2108,
1,	1788,	2108,
1,	1760,	2108,
1,	1728,	2108,
1,	1700,	2096,
1,	1680,	2076,
1,	1668,	2056,
1,	1668,	2056,
1,	1668,	2056,
1,	1668,	2056,
1,	1668,	2056,
1,	1652,	2072,
1,	1640,	2092,
1,	1624,	2112,
1,	1624,	2112,
1,	1624,	2112,
1,	1624,	2112,
0,	1696,	2072,
0,	1696,	2072,
0,	1696,	2072,
0,	1696,	2072,
0,	1696,	2072,
1,	1696,	2072,
1,	1712,	2056,
1,	1712,	2056,
1,	1716,	2044,
1,	1716,	2044,
1,	1716,	2044,
1,	1724,	2056,
1,	1736,	2060,
1,	1752,	2068,
1,	1764,	2064,
1,	1772,	2048,
1,	1772,	2048,
1,	1772,	2024,
1,	1760,	2020,
1,	1744,	2024,
1,	1744,	2024,
1,	1724,	2024,
1,	1724,	2024,
1,	1724,	2024,
1,	1724,	2024,
1,	1724,	2024,
1,	1728,	2004,
1,	1728,	1992,
1,	1728,	1980,
1,	1728,	1964,
1,	1728,	1948,
1,	1716,	1940,
1,	1716,	1940,
1,	1732,	1944,
1,	1756,	1948,
1,	1776,	1956,
1,	1796,	1960,
1,	1820,	1964,
1,	1844,	1964,
1,	1868,	1972,
1,	1892,	1972,
1,	1916,	1972,
1,	1928,	1976,
1,	1928,	1976,
1,	1928,	1976,
1,	1916,	1968,
1,	1916,	1984,
1,	1916,	2008,
1,	1916,	2032,
1,	1912,	2048,
1,	1908,	2068,
1,	1908,	2080,
1,	1912,	2064,
1,	1912,	2064,
1,	1912,	2064,
1,	1912,	2064,
0,	1976,	1908,
0,	2020,	1800,
0,	2020,	1800,
0,	2020,	1800,
0,	2020,	1800,
0,	2020,	1800,
0,	2020,	1800,
1,	2020,	1800,
1,	2012,	1784,
1,	2008,	1772,
1,	2016,	1756,
1,	2016,	1756,
1,	2016,	1756,
1,	2016,	1756,
1,	2016,	1756,
0,	2076,	1696,
0,	2124,	1640,
0,	2124,	1640,
0,	2124,	1640,
0,	2124,	1640,
0,	2124,	1640,
0,	2124,	1640,
1,	2124,	1640,
1,	2140,	1636,
1,	2160,	1636,
1,	2176,	1640,
1,	2200,	1640,
1,	2220,	1652,
1,	2220,	1652,
1,	2220,	1652,
1,	2220,	1652,
0,	2368,	1664,
0,	2584,	1696,
0,	2712,	1724,
0,	2780,	1732,
0,	2780,	1732,
0,	2780,	1732,
0,	2780,	1732,
0,	2780,	1732,
1,	2768,	1712,
1,	2736,	1672,
1,	2708,	1636,
1,	2648,	1584,
1,	2596,	1536,
1,	2540,	1480,
1,	2492,	1448,
1,	2448,	1412,
1,	2384,	1376,
1,	2328,	1348,
1,	2292,	1328,
1,	2260,	1324,
1,	2236,	1324,
1,	2204,	1328,
1,	2168,	1356,
1,	2104,	1376,
1,	2040,	1404,
1,	1976,	1440,
1,	1924,	1480,
1,	1868,	1512,
1,	1812,	1548,
1,	1780,	1572,
1,	1764,	1596,
1,	1740,	1640,
1,	1716,	1680,
1,	1696,	1728,
1,	1680,	1772,
1,	1676,	1808,
0,	1568,	1840,
0,	1428,	1896,
0,	1320,	1956,
0,	1244,	1992,
0,	1156,	2044,
0,	1156,	2044,
0,	1156,	2044,
0,	1156,	2044,
0,	1156,	2044,
1,	1144,	2004,
1,	1124,	1944,
1,	1108,	1880,
1,	1100,	1840,
1,	1088,	1792,
1,	1088,	1792,
1,	1088,	1792,
1,	1088,	1792,
1,	1128,	1764,
1,	1172,	1736,
1,	1172,	1736,
1,	1172,	1736,
1,	1172,	1736,
1,	1192,	1788,
1,	1204,	1840,
1,	1220,	1892,
1,	1228,	1944,
1,	1236,	1968,
1,	1236,	1968,
1,	1236,	1968,
1,	1236,	1968,
1,	1236,	1968,
1,	1228,	1908,
1,	1220,	1848,
1,	1216,	1776,
1,	1208,	1700,
1,	1200,	1624,
1,	1192,	1556,
1,	1188,	1492,
1,	1188,	1444,
1,	1188,	1416,
1,	1188,	1416,
1,	1188,	1416,
1,	1188,	1416,
1,	1228,	1420,
1,	1272,	1444,
1,	1272,	1444,
1,	1272,	1444,
1,	1272,	1444,
1,	1284,	1488,
1,	1284,	1556,
1,	1288,	1648,
1,	1292,	1720,
1,	1296,	1796,
1,	1296,	1844,
1,	1300,	1900,
1,	1300,	1900,
1,	1300,	1900,
1,	1300,	1900,
1,	1300,	1900,
0,	1344,	1848,
0,	1344,	1848,
0,	1344,	1848,
0,	1344,	1848,
1,	1340,	1808,
1,	1344,	1740,
1,	1344,	1680,
1,	1352,	1620,
1,	1352,	1620,
1,	1352,	1620,
1,	1352,	1620,
1,	1396,	1648,
1,	1428,	1684,
1,	1428,	1684,
1,	1428,	1684,
1,	1428,	1684,
1,	1428,	1684,
1,	1428,	1728,
1,	1428,	1772,
1,	1424,	1792,
1,	1424,	1792,
1,	1424,	1792,
1,	1424,	1792,
0,	1472,	1740,
0,	1472,	1740,
0,	1472,	1740,
0,	1472,	1740,
1,	1480,	1708,
1,	1480,	1652,
1,	1488,	1580,
1,	1508,	1512,
1,	1544,	1408,
1,	1572,	1324,
1,	1604,	1256,
1,	1632,	1192,
1,	1656,	1136,
1,	1656,	1136,
1,	1656,	1136,
1,	1656,	1136,
1,	1656,	1136,
1,	1664,	1184,
1,	1664,	1244,
1,	1664,	1336,
1,	1664,	1412,
1,	1664,	1484,
1,	1664,	1544,
1,	1668,	1620,
1,	1672,	1688,
1,	1672,	1736,
1,	1672,	1772,
1,	1672,	1772,
1,	1672,	1772,
1,	1672,	1772,
0,	1664,	1588,
0,	1664,	1588,
0,	1664,	1588,
0,	1664,	1588,
0,	1664,	1588,
1,	1688,	1520,
1,	1700,	1448,
1,	1724,	1384,
1,	1756,	1312,
1,	1776,	1260,
1,	1804,	1220,
1,	1804,	1220,
1,	1804,	1220,
1,	1804,	1220,
1,	1804,	1220,
1,	1832,	1280,
1,	1852,	1324,
1,	1876,	1380,
1,	1900,	1432,
1,	1900,	1432,
1,	1900,	1432,
1,	1900,	1432,
1,	1900,	1432,
1,	1940,	1380,
1,	1972,	1324,
1,	2012,	1276,
1,	2028,	1256,
1,	2028,	1256,
1,	2028,	1256,
1,	2028,	1256,
1,	2028,	1256,
1,	2060,	1288,
1,	2088,	1324,
1,	2088,	1324,
1,	2088,	1324,
1,	2088,	1324,
1,	2088,	1324,
1,	2144,	1304,
1,	2180,	1292,
1,	2180,	1292,
1,	2180,	1292,
1,	2180,	1292,
1,	2180,	1292,
1,	2204,	1320,
1,	2204,	1320,
1,	2204,	1320,
1,	2204,	1320,
0,	2360,	1400,
0,	2500,	1476,
0,	2668,	1600,
0,	2668,	1600,
0,	2668,	1600,
0,	2668,	1600,
0,	2668,	1600,
1,	2664,	1564,
1,	2660,	1488,
1,	2668,	1416,
1,	2668,	1332,
1,	2668,	1332,
1,	2668,	1332,
1,	2668,	1332,
1,	2668,	1332,
0,	2472,	1332,
0,	2292,	1328,
0,	2292,	1328,
0,	2292,	1328,
0,	2292,	1328,
0,	2292,	1328,
1,	2292,	1328,
1,	2368,	1320,
1,	2424,	1320,
1,	2500,	1320,
1,	2572,	1320,
1,	2636,	1320,
1,	2660,	1316,
1,	2676,	1312,
1,	2692,	1308,
1,	2696,	1292,
1,	2696,	1264,
1,	2700,	1228,
1,	2704,	1184,
1,	2704,	1148,
1,	2708,	1108,
1,	2724,	1092,
1,	2740,	1068,
1,	2760,	1044,
1,	2792,	1032,
1,	2824,	1020,
1,	2860,	1008,
1,	2884,	996,
1,	2892,	980,
1,	2884,	968,
1,	2876,	936,
1,	2856,	896,
1,	2816,	820,
1,	2784,	736,
1,	2756,	656,
1,	2716,	564,
1,	2668,	476,
1,	2624,	392,
1,	2584,	340,
1,	2568,	312,
1,	2552,	300,
1,	2552,	300,
1,	2552,	300,
1,	2552,	300,
1,	2536,	320,
1,	2508,	368,
1,	2484,	440,
1,	2456,	488,
1,	2424,	548,
1,	2368,	620,
1,	2328,	680,
1,	2284,	724,
1,	2268,	736,
1,	2268,	736,
1,	2268,	736,
1,	2268,	736,
1,	2268,	736,
1,	2288,	748,
1,	2300,	764,
1,	2308,	796,
1,	2308,	824,
1,	2308,	852,
1,	2300,	876,
1,	2284,	900,
1,	2264,	916,
1,	2236,	928,
1,	2212,	928,
1,	2180,	920,
1,	2148,	900,
1,	2124,	884,
1,	2100,	860,
1,	2084,	836,
1,	2064,	808,
1,	2052,	768,
1,	2052,	744,
1,	2060,	704,
1,	2080,	680,
1,	2096,	668,
1,	2132,	664,
1,	2164,	668,
1,	2200,	680,
1,	2228,	696,
1,	2244,	712,
1,	2264,	724,
1,	2264,	724,
1,	2264,	724,
1,	2264,	724,
1,	2264,	724,
0,	2260,	780,
0,	2260,	780,
0,	2260,	780,
0,	2260,	780,
1,	2260,	800,
1,	2256,	828,
1,	2252,	856,
1,	2240,	876,
1,	2220,	884,
1,	2200,	892,
1,	2172,	892,
1,	2144,	884,
1,	2128,	868,
1,	2112,	848,
1,	2100,	832,
1,	2096,	808,
1,	2088,	780,
1,	2092,	744,
1,	2104,	724,
1,	2124,	712,
1,	2152,	700,
1,	2180,	708,
1,	2204,	716,
1,	2224,	728,
1,	2240,	748,
1,	2248,	764,
1,	2256,	784,
1,	2256,	800,
1,	2256,	800,
1,	2256,	800,
1,	2256,	800,
1,	2256,	800,
0,	2152,	772,
0,	2044,	724,
0,	2044,	724,
0,	2044,	724,
0,	2044,	724,
0,	2044,	724,
0,	2032,	720,
1,	1984,	704,
1,	1924,	684,
1,	1840,	652,
1,	1768,	612,
1,	1700,	572,
1,	1652,	528,
1,	1592,	472,
1,	1544,	420,
1,	1516,	376,
1,	1480,	332,
0,	1416,	324,
0,	1416,	324,
0,	1416,	324,
0,	1416,	324,
1,	1436,	348,
1,	1464,	388,
1,	1496,	444,
1,	1520,	492,
1,	1556,	564,
1,	1592,	628,
1,	1616,	696,
1,	1656,	764,
1,	1700,	820,
1,	1748,	860,
1,	1812,	904,
1,	1852,	940,
1,	1904,	952,
1,	1968,	968,
1,	2032,	980,
1,	2076,	996,
1,	2120,	1012,
1,	2140,	1040,
1,	2156,	1060,
1,	2172,	1084,
1,	2172,	1116,
1,	2172,	1144,
1,	2172,	1184,
1,	2172,	1216,
1,	2172,	1256,
1,	2172,	1288,
1,	2172,	1288,
1,	2172,	1288,
1,	2172,	1288,
1,	2172,	1288,
0,	2088,	1120,
0,	2000,	976,
0,	2000,	976,
0,	2000,	976,
0,	2000,	976,
0,	2000,	976,
1,	1968,	996,
1,	1920,	1020,
1,	1848,	1044,
1,	1732,	1068,
1,	1636,	1100,
1,	1516,	1108,
1,	1368,	1124,
1,	1272,	1124,
1,	1144,	1124,
1,	996,	1104,
1,	864,	1076,
1,	760,	1052,
1,	688,	1040,
1,	648,	1028,
1,	616,	1024,
1,	616,	1024,
1,	616,	1024,
1,	616,	1024,
1,	616,	1024,
1,	612,	992,
1,	612,	964,
1,	612,	964,
1,	612,	964,
1,	612,	964,
1,	580,	932,
1,	556,	904,
1,	556,	904,
1,	556,	904,
1,	556,	904,
1,	560,	868,
1,	580,	844,
1,	596,	820,
1,	596,	820,
1,	596,	820,
1,	596,	820,
1,	596,	776,
1,	596,	744,
1,	596,	744,
1,	596,	744,
1,	596,	744,
1,	624,	728,
1,	624,	728,
1,	624,	728,
1,	608,	676,
1,	596,	636,
1,	596,	624,
1,	596,	624,
1,	620,	600,
1,	644,	596,
1,	648,	584,
1,	652,	572,
1,	652,	556,
1,	648,	532,
0,	504,	300,
0,	504,	300,
0,	504,	300,
0,	504,	300,
0,	504,	300,
1,	496,	324,
1,	500,	336,
1,	512,	360,
1,	516,	380,
1,	508,	392,
1,	496,	408,
1,	484,	424,
1,	484,	424,
1,	508,	436,
1,	544,	468,
1,	600,	508,
1,	644,	536,
1,	744,	600,
1,	868,	664,
1,	956,	716,
1,	1076,	772,
1,	1196,	816,
1,	1312,	852,
1,	1400,	880,
1,	1480,	904,
1,	1548,	920,
1,	1548,	920,
1,	1548,	920,
1,	1548,	920,
1,	1548,	920,
1,	1548,	920,
0,	1720,	944,
0,	1904,	956,
0,	1904,	956,
0,	1904,	956,
0,	1904,	956,
0,	1904,	956,
1,	1864,	948,
1,	1832,	952,
1,	1796,	960,
1,	1736,	964,
1,	1692,	964,
1,	1640,	948,
1,	1552,	920,
1,	1460,	880,
1,	1368,	840,
1,	1248,	784,
1,	1140,	720,
1,	1036,	652,
1,	948,	584,
1,	856,	516,
1,	780,	452,
1,	712,	380,
1,	644,	312,
1,	644,	312,
1,	644,	312,
1,	644,	312,
1,	644,	312,
1,	644,	312,
0,	1068,	312,
0,	1304,	308,
0,	1632,	312,
0,	1632,	312,
0,	1632,	312,
0,	1632,	312,
0,	1632,	312,
0,	1632,	312,
1,	1636,	332,
1,	1668,	372,
1,	1728,	432,
1,	1808,	480,
1,	1908,	532,
1,	1988,	568,
1,	2064,	612,
1,	2112,	656,
1,	2112,	656,
1,	2112,	656,
1,	2112,	656,
1,	2112,	656,
1,	2112,	656,
0,	2200,	672,
0,	2200,	672,
0,	2200,	672,
0,	2200,	672,
0,	2200,	672,
0,	2200,	672,
1,	2188,	616,
1,	2152,	544,
1,	2064,	456,
1,	2004,	384,
1,	1976,	328,
1,	1972,	312,
1,	1972,	312,
1,	1972,	312,
1,	1972,	312,
1,	1972,	312,
0,	2272,	316,
0,	2460,	308,
0,	2636,	324,
0,	2636,	324,
0,	2636,	324,
0,	2636,	324,
0,	2636,	324,
0,	2636,	324,
1,	2660,	340,
1,	2684,	396,
1,	2700,	436,
1,	2724,	476,
1,	2748,	532,
1,	2780,	576,
1,	2812,	608,
1,	2812,	608,
1,	2812,	608,
1,	2812,	608,
1,	2800,	648,
1,	2796,	680,
1,	2824,	732,
1,	2848,	756,
1,	2864,	768,
1,	2880,	788,
1,	2880,	788,
1,	2880,	788,
1,	2888,	836,
1,	2896,	884,
1,	2896,	932,
1,	2900,	956,
1,	2896,	968,
1,	2896,	968,
1,	2896,	968,
1,	2896,	968,
1,	2896,	968,
1,	2928,	968,
1,	3004,	960,
1,	3056,	940,
1,	3140,	888,
1,	3224,	832,
1,	3300,	780,
1,	3396,	680,
1,	3504,	588,
1,	3588,	500,
1,	3660,	408,
1,	3732,	320,
1,	3748,	296,
1,	3748,	296,
1,	3748,	296,
1,	3748,	296,
1,	3748,	296,
0,	3836,	588,
0,	3884,	852,
0,	3940,	1128,
0,	3952,	1184,
0,	3952,	1184,
0,	3952,	1184,
0,	3952,	1184,
0,	3952,	1184,
1,	3888,	1184,
1,	3804,	1180,
1,	3700,	1188,
1,	3612,	1184,
1,	3504,	1184,
1,	3408,	1184,
1,	3316,	1176,
1,	3272,	1168,
1,	3224,	1152,
1,	3172,	1124,
1,	3116,	1084,
1,	3072,	1048,
1,	3024,	1016,
1,	2992,	992,
1,	2956,	968,
1,	2956,	968,
1,	2956,	968,
1,	2956,	968,
1,	2956,	968,
1,	2956,	968,
1,	2996,	968,
1,	3028,	968,
1,	3072,	968,
1,	3128,	968,
1,	3208,	960,
1,	3284,	924,
1,	3348,	876,
1,	3388,	848,
1,	3388,	848,
1,	3388,	848,
0,	3244,	624,
0,	3120,	460,
0,	2984,	304,
0,	2984,	304,
0,	2984,	304,
0,	2984,	304,
0,	2984,	304,
0,	2984,	304,
1,	2968,	332,
1,	2940,	396,
1,	2900,	468,
1,	2864,	532,
1,	2828,	584,
1,	2816,	608,
1,	2816,	608,
1,	2816,	608,
1,	2816,	608,
1,	2816,	608,
0,	2612,	1012,
0,	2412,	1488,
0,	2124,	2132,
0,	1904,	2564,
0,	1696,	2932,
0,	1532,	3184,
0,	1432,	3308,
0,	1432,	3308,
0,	1432,	3308,
0,	1432,	3308,
0,	1432,	3308,
0,	1432,	3308,
0,	1432,	3308,
0,	1432,	3308,
0,	1432,	3308,
 };
 
void setup()   

{                
 pinMode(DAC0, OUTPUT); 
 pinMode(DAC1, OUTPUT); 
 analogWriteResolution(12);  
} // end void setup

void loop() 
{
 if (logdata[k] == 0) // laser ON/OFF
    {
     digitalWrite(blanking, LOW);//turn off laser
    }
    else
    {
     digitalWrite(blanking, HIGH); //turn laser on
    }
 k = k + 1; //inc counter to index to x coord
 valx = logdata[k];
 k = k + 1;//inc counter to index to Y coord
 valy = logdata[k];
   
 delayMicroseconds(25);        // pauses for 10 microseconds 
      
 //output x & y co-ord
 analogWrite(DAC0, valx);
 analogWrite(DAC1, valy);  
 
 k = k +1;     
 
 if (k > 5031) // return to beginning of logdata
    {
     k = 0;
    } 
 
} // end void loop

 

[camvo]

And here is the ILDA test Patern. (without blanking)

The microsecond delay surely influences the quality of the image but increases flickering.

I used the same code as in the YOKI-girl but with 50 micro seconds delay.

 

[Multimode]

And here is the ILDA test Patern. (without blanking)
The microsecond delay surely influences the quality of the image but increases flickering.
I used the same code as in the YOKI-girl but with 50 micro seconds delay.

Looking good:beer:
Your scan rate looks much faster than I can get.
2 vids show the comparison to yours.
I've maxed out on the ATMEGA328:yabbem:
I recon you'll be able to get a lot more out of the Due.
Maybe the analogue write command is slowing the Due????

The blanking code wasn't quite right (well, more like wrong!)
Ive changed it so there is a delay on the first change of blank state only.
This has helped alot with getting the lines the correct length and stops the text from getting truncated - only problem is there is an arc at that start of the central circle.

//=============Blanking==============
    int z;
    z=k-2;
    byte flag;//current value of z (on or off)
    
    int Zblank = pgm_read_word(logodata + z);
    
    if (flag!=Zblank)//if blank value oposite of flag, do the routine below.
    {
    if (Zblank ==0)// is the data table say 1 or 0
    {
     delayMicroseconds(500);  // pauses for ??? microseconds 
      digitalWrite(Blanking, LOW);//turn off laser
      flag=Zblank; 
    }
    else
    {
     delayMicroseconds(600); // pauses for ??? microseconds 
     digitalWrite(Blanking, HIGH); //turn laser on
    
    }
    }
      flag=Zblank; //Update blank flag status

So, it scans at 11.42HZ (about the limit of the scanners and At328)
1191 points x 11.42 = 13.6KPS
I think it's as good as I get it now, not bad for 20yr old gear !

Might get a Due and some faster galvos to play with

ATB
MM

 

[camvo]

Then how do you take the photos with the complete image on it??
When I make a photo, it displays only part of the image.
(Camera is Samsung S3)

Still I think it is impressive what you did with the 328. :bowdown:

 

[Multimode]

Then how do you take the photos with the complete image on it??
When I make a photo, it displays only part of the image.
(Camera is Samsung S3)

Still I think it is impressive what you did with the 328. :bowdown:

My camera is a canon SX100 - basic compact jobbie with manual mode.
Set the shutter to say 1/8sec and apperture to say F8 and shoot away.

Rule is if you scan at 10hz (1 scan takes 1/10 sec) then the shutter speed needs to be slower than this - set at say 1/8sec.

OR 20Hz, then shutter meust be slower than 1/20sec.

Here is my latest ILDA frame.

ATB
MM

 

[camvo]

I love the SAMSUNG S3 Camera.

But that is one of the few things it cannot do: change the shutter time.

 

[Multimode]

I love the SAMSUNG S3 Camera.
But that is one of the few things it cannot do: change the shutter time.

Try taking the photo in the dark / lights off, and if you can turn the power of the laser down.
It might force the camera to take a longer exposure.

 

[Bionic-Badger]

See if this works (taken from here):

  /* write to DAC0 */
  dacc_set_channel_selection(DACC_INTERFACE, 0);
  dacc_write_conversion_data(DACC_INTERFACE, some_value);
  /* write to DAC1 */
  dacc_set_channel_selection(DACC_INTERFACE, 1);
  dacc_write_conversion_data(DACC_INTERFACE, some_other_value);

I've also read something about people burning out their second DAC -- something about it needing current-limiting resistors or something. So make sure that doesn't happen.

 

[camvo]

Now I am scared to use it. :cryyy:

I would like to think that outputing real audio is a far more heavier job than what "we" are doing.


I am using the same DAC correction circuit as in the harp.

They all worked so far.....
[knocking on wood]

 

[Bionic-Badger]

I think if you put an op amp between the DAC output and the load you should be fine. It just shouldn't direct-drive something like an LED.

Unfortunately, a lot of the Arduino tutorials use the poor practice of powering devices like LEDs directly from pins. Unless explicitly made for powering stuff, pins should only be treated as small signal inputs/outputs, not something you'd use to deliver much current. Putting an op amp or buffer between the signal output and whatever you're driving is a good first step to preventing any damage.

Some sort of op amp in front is usually a good idea anyway to get your outputs in the expected output range. I also think the DACs on the Arduino Due output signals in a smaller range like 2.5V or something; so it might be necessary anyway to make it work with your stuff.